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Northwest Africa 8218 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 8218 This is an OFFICIAL meteorite name. Abbreviation: NWA 8218 Observed fall: No Year found: 2013 Country: (Northwest Africa) Mass: 68 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 128 approved meteorites classified as CK4. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 27 Jan 2015 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 104:
Northwest Africa 8218 (NWA 8218) (Northwest Africa) Purchased: 2013 Dec Classification: Carbonaceous chondrite (CK4) History: Purchased in Temara, Morocco by A. Aaronson in December 2013. Petrography: (A. Irving and S. Kuehner, UWS) Unaltered specimen composed of separated, granular chondrules (mean 1.4±0.6mm; containing abundant magnetite) in a recrystallized matrix. Minerals are olivine, orthopyroxene, subcalcic augite, augite, intermediate plagioclase, Cr-bearing magnetite, Ti-Cr-Al-bearing spinel, pentlandite and Co-Ni-Fe sulfide (some in intergrowths with ferroan olivine and magnetite). Geochemistry: Olivine (Fa32.2-32.7, FeO/MnO = 108-116, N = 3), orthopyroxene (Fs26.4Wo0.7, N = 3), subcalcic augite (Fs17.6Wo23.8), augite (Fs10.6-12.3Wo48.0-45.8). Classification: Carbonaceous chondrite (CK4). Specimens: 13.6 g including one polished thin section at UWB. The remaining material is held by Aaronson. | ||||||||||||||||||||||||||||||
Data from: MB104 Table 0 Line 0: |
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Institutions and collections |
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012) UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023) Aaronson: Sahara Overland Ltd., Harhora, Temara, 12000, Morocco (private address; updated 3 Jan 2010) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
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Geography: |
Statistics: This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names) | ||||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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